Dial telephone calling device



7 J. S. STULL DIAL TELEPHONE CALLING DEVICE 6 Sheets-Sheet 2 Filed Feb. 12., 1947 AW I l ATTORME) Aug. 16, 1949. J. 5. STULL DIAL TELEPHONE CALLING DEVICE 6 Sheets-Sheet 3 //v v/v 70 J 5'. STUL L Arron/vi) Filed Feb. 12, 1947 16, 1949- J. s. STULL DIAL TELEPHONE CALLING DEVICE 6 Sheets-Sheet 4 Filed Feb. 12, 1947 Aug. 16, 1949.- J'. 5. sTuLL DIAL TELEPHONE CALLING DEVICE 6 Sheets-Sheet 6 Filed Feb. 12, 1947 Patented Aug. 1949 UNITE STATES PATENT' OFFICE Q DIAL 'rnmrnt nt z siuuqnnvlcn v John S. Stull, Chicago, 111.,

Electric Company,

This invention relates to a telephone calling device for use in an automatic telephone system and more particularly to a dial operated impulse sender in which the dial is rotated only in one direction.

It is an object of the present invention to provide an improved calling device capable of being actuated at a rapid rate.

In accordance with one embodiment of the present invention, the deviceis provided with a finger wheel dial rotatable in one direction through dialing movements of various predetermined lengths corresponding to the various digits of a number to be dialed. The dial is associated in coaxial alignment with a rotatable pulsing wheel of a pulsing mechanism which is connected to a governor and produces a predetermined number of pulses at regular spaced intervals for each complete revolution of the wheel. The wheel is stressed for rotation by a torsion spring interconnected between the pulsing wheel and the dial and is engageable by a plurality of normally inoperative stop members capable of stopping the pulsing wheel in a plurality of positions whereby the wheel may be stopped after the production of a predetermined number of pulses. The stop members are sequentially actuated by a cam member rotatable with the dial so that one of the stop members is rendered effective to stop the pulsing wheel after it has moved through a predetermined arc and has produced a selected number of pulses, as determined by the dialing movement of the fingerwheel dial, the number of pulses being always one more than the numerical value of the digit dialed. The dial is movable in a reverse direction at the end of each dialing movement for a relatively short distance to set up and render efiective selected ones of a plurality of normally ineffective cam members at points in angular relation to each other corresponding to the angle of rotation of successive dialing movements of the dial to cause the actuation of a rotatable circuit control means for rendering inefiective the first or extra pulse of each digit series of pulses and thereby separate each series of digit pulses from the others. This arrangement permits the rapid actuation of the dial and the speedy completion of the number dialing operation and results in the setting up of the cam members in a sequence or pattern corresponding to the sequence or pattern of the dialing movements of the dial while the pulses produced by the pulsing mechanism at regular governor-controlled intervals are separated by the action of the dial conditioned cam members intoseparate assignor to Western Incorporated. New York; N. Y., a corporation of New York Application February 12, 1947, Serial No. 728,029

26 Claims. (01. 179-902) series with the number of pulses in each series corresponding to the digits of the number dialed.

The invention will be-more fully understood from the following description when considered in connection with the accompanying drawings, in which Fig. 1 is an enlarged front view of the calling device showing, in dotted lines, the radially movable stop members set in various radial positions and the dial actuated members for effecting the setting of the stop members;

' Fig. 2 is a perspective view lever rigidly connected to the dial for camming the stop members axially;

Fig. 3 is a perspective view of the dial actuated member for camming the stop members radially outwardly;' v

Fig. 4 is a vertical, axial, sectional view of the device;

Fig. 5 is a fragmentary rear elevational view of the device; 1

Fig. 6 is a fragmentary sectional view of the device showing the dial actuated member camming a stop member radially into engagement with an abutment member on the pulsing wheel;

Fig. '7 is a vertical sectional view'taken onthe line 1-1 of Fig. 4 showing the arcuate stop members in their various positions and the dial actu-' ated members, the abutment member and a switch actuating member in engagement therewith;

Figs. 8 and 9 are fragmentary views similar to Fig. '7 showing parts of the mechanism in changed positions;

Fig. 10 is a sectional view taken on the line lO-lli'of Fig.4;

Fig. 11 is a detail view of the abutment member and the switch actuating lever secured thereto detached from the pulsing mechanism;

Fig. 12 is a. sectional view taken on the line l2-l2 of Fig. 4 showing a governor for controlling the rate of transmission of the pulses;

I Fig. 13 is a horizontal, axial, sectionalview of the device;

Fig. 14 is an elevational view of the portion of the device showing the abutment member and the switch actuating lever carried by the pulsing mechanism in engagement with the stop members and showing-the dial actuated members in one position in their relationto the stop members before the dial and. the lever rotatable therewith have been reversely rotated;

Fig. 15 is a View similar to Fig. 14 showing some of' the parts in changed position after the lever has been moved in the reverse direction;

of the'dial actuated Fig. 16 is a schematic view illustrating the relation of the pulsing contact springs and a circuit control switch connected to the telephone;

Fig. 1'7 is a fragmentary view in perspective of the stop members;

Fig. 18 is a fragmentary view in perspective showing the dial actuated members in their normal positions in engagemen-t'with the arcuate stop members; and

Fig. 19 is a view in perspective of the abutment member and the pivoted switch actuating lever carried thereby detached from the pulsing mechanism, the parts being the same as those shown in Fig. 11.

As shown in the drawings, particularly in Figs. 1, 4 and 13, the calling device has a finger wheel or dial 2!), which is secured to a shaft 2! for rotation about torsion motor spring 22 to a rotatable pulsing mechanism 23 (Fig. 13) comprising a toothed pulsing wheel 24, a pulsing lever 25 and apair of pulsing contact springs 26 and 21'. The dial 20 is providedwith twelve equally spaced apertures or finger holes "disposed adjacent the outer edge thereof (Fig. 1). 'It is further provided with a central non-circular aperture 32 for receiving a non-circular portion 36 of the shaft 2!, to which the dial 20 is secured by means of a lock nut 34, which engages a reduced threaded end 35 of the shaft 2|. The shaft 2| is journalled in a bearing member 31 fixed to a supporting plate 38 having a flange 39 fitting over a cylindrical wall!!! of a housing H and secured thereto by screws 42. The dial 20 and a lever 43 secured to the opposite ends of the shaft 2| serve to prevent longitudinal or axial displacement thereof.

A number plate M, fixed to the plate 38, has printed thereon a series of ten digits or numbers ranging from to 9, inclusive, and arranged as shown in'Fig. 1 in alignment with the finger hole 28 of the dial 2B. A finger stop '45 (Figs. 1 and 13) secured to the 'flange SB of the plate 38 is positioned to overlie a portion of the dial 20' and serves to engage the finger of the person calling and limit the turning movement of the dial 2!! during a dialing operation. The numbers on the plate 4 4 are arranged so that the person'calling, by insertinghis finger in a finger hole opposite a selected number on the number plate 44 and turning the dial 2!! until his finger engages the stop 45. will rotate the dial through an arc that will efiect the operation of the pulsing mechanism 23 through a similar arc and transmit a number of pulses corresponding to the digit selected.

The shaft 2! (Fig. 4) is recessed to receive the torsion spring 22 therein, one end 45 of which is firmly secured to the shaft 2!. The other end 4! of the torsion spring 22 is bent diametrically across the sprin of the pulsing mechanism 23 by fitting into a slot @9 in the end thereof. Before the end" of the s ring 22 is connected to the shaft 48 it is turned through several revolutions to create a torque tending to rotate the dial 2|! and the shaft 48 in opposite directions. The shaft 48 is pro vided with a circular disc or flange 52 an is journalled in a bearing member 53 secured to a supporting wall 1 of the housin M. A. washer 55' and a lock nut 56. mounted on the end of the shaft 48. and the flange 52, act to revent longitudinal displacement of the shaft 48 in the hearin member 53.

Secured to the flange 52 is the toothed pulsing wheel 24, is provided on its periphery with its axis and is connected through a.

and is connected to a shaft 48 l a ring-like body portion 99',

twelve equally spaced teeth 6| (Figs. 4, 10 and 13). Upon rotation of the pulsing wheel 24, the teeth 6| engage and move an arm 62 of the pulsing lever 25, which is pivotally mounted on a pin 63 carried by brackets 64 and 65 secured to the wall 54 of the housing 4|. Extending on the opposite side of the wall 54 from the arm 62 of the pulsing lever 25 is an arm 66 supporting a roller 61, which engages one end of the contact spring 26 (Figs. 5 and 13).

The contact springs 26 and '2'! are supported on a block of insulation 68 (Fig. 13) mounted on the wall 54 and are electrically connectible through'a circuit control switch 69, also mounted on the block 68, to line terminals of the calling or telephone circuit (Fig. 16). For the sake of clearness, the wiring connecting the various contact springs and terminals is omitted from the structural portions of the drawings. The contact spring 26 is biased to normally engage the contact spring 21' and to hold the pulsing lever 25 so that the arm 62 thereof is in the path of the teeth 6| of the pulsing wheel 60.

In order to control the rate at which the pulses are transmitted, a governor ll! is provided (Figs. 4 and 12). The governor 10 is mounted within a drum H, which is secured to and projects rearwardly from the wall 54 of the housing M. The rear wall 12 of the drum is centrally apertured to receive one end of a governor shaft 13, the other end of which is journalled in a bridge member 14 (Fig. 10). A cross arm 15 is fixed to the shaft 13-and carries a pair of arcuate weights 16 and 'l'! pivoted to the ends of the cross arm by pins 18 and 19. The weights l6 and T! are maintained in their normal position by leaf springs and 8| secured to one end, respectively, of each of the weights 16 and 11' and which abut against stop member 82, carried by the cross arm 15. Friction studs or shoes 83 and 84, carried, respectively, by the weights is and I1, move outward with the weights and engage the inner surface of the drum 1! when the shaft 13 is rotated fast enough to overcome the action of the sprin s 80 and Bi and act to retard the movement of the shaft and limit the rotation thereof to a predetermined rate.

The governor shaft 13 has secured thereto a gear 86 (Figs. 4 and 10) which meshes with a gear 81 fixed to a shaft 88, the ends of which are journalled in the wall 54 and the bridge member 14. A gear 88 is fixed to the shaft 88 and meshes with a ring gear 90' secured to the flange 52 on the shaft 48 of the pulsing mechanism 23. Upon rotation of the pulsing mechanism 23, the governor 10 is also rotated through the gear drive control the rate of rotation of the pulsing mechanism and the frequency at which the pulses are produced.

To stop the movement of the pulsing mechanism 23. after the completion of a pulse transmitting operation, there is fixed to the flange 52 of the pulsing mechanism a cooperating stop element or abutment member (Figs. 4, 7, 10, 11 and 19), which is adapted to engage and be stopped by any one of a plurality of non-rotatable radially movable arcuate stop members 96 (Figs. 7, 8, 9 and 1'7). The stop members 96 are moved radially outwardly into the path of the abutment member 95 by a camming member .9! rotatable on the bearing 31 with'the dial 29, as will be more clearly described hereinafter. The abutment member 95, as shown most clearly in 19, comprises an arm 98 extending radially from which is secured to the wheel 24 and theflange 52 of the shaft 48. The arm 98 is provided with an axially extending portion I and a forward arcuate portion IOI, which terminates in a radially disposed end I02 engageable with the stop members 96.

I There are twelve stop members 96 (Figs. '7 and 17) equally spaced and arranged in a circle with the stop surfaces or end edges I04 thereon adapted to engage the abutment 95 and stop the pulsing mechanism after a movement thereof suflicient to produce one complete pulse or a plurality of complete pulses. The members 96 are formed on the ends of flexible irregularly shaped arms I05 extending outwardly from a central disc portion I06 and comprise a unitary structure formed from a sheet of spring steel. The disc I06 is centrally apertured and is secured to the stationary bearing member 31 (Figs. 4 and 13). The flexible arms I05 comprise flat radial portions I01, the outer .ends of which are bent at right angles and have extending therefrom angularly disposed portions I08, which, at their ends, are formed with short longitudinally extending portions I09 on which the members 96 are formed.

.Each of the members 96, when viewed from above (Figs. 14 and 15), is oblong and has straight end edges I04 and H0 substantially parallel to the axis of the device and has front edges III and H2 separated by the longitudinally extending portion I09 of the supporting arms I05. The front edge III is perpendicular to the edge I04 and the front edge H2 is inclined with respect to the edges H0 and I II. The rear edge is irregularly shaped to form a cam I I3 having end portions inclined with respect to an intermediate straight portion.

The arcuate members 96 are stressed longitudinally forward toward the dial and radially inward by the flexible arms I05 and are movable radially to occupy any one of three positions, as indicated in Fig. '7, a radially outer position In, a radially intermediate position I I8, and a radially inner position H9. The forward edges III of the members 96 are urged against and are engaged by either of the relatively spaced vertical faces I20 or I2I ofarmsl22 formed on the outer edge of a disc I23, which is secured to the bearing member 31 (Figs. 4, 7, 13, 14 and 18). arms I22 engage the inner arcuate surface I of the members 96 adjacent the edge III and serve to hold the members 96 in their intermediate positions H8 and the edge surfaces I21 of the disc I23 between the arms I22 act to limit the inward movement of the members 96 and determine their inner radial positions H9.

The members 96 have several functions. When in the radially outer position II I, they serve to engage the abutment 95 and stop the rotation of the pulsing mechanism; when in the radially intermediate position II8, they serve to stop the reverse movement of the dial 20, as hereinafter described; and when in the radially inner position I I9, they serve to actuate the circuit control switch 69, as hereinafter described.

The rotatable actuating or camming'member 91 (Figs. 3, 4, 6, 7, 8 and 18), in rotating with the dial '20, operates to move successively each arcuate-member 96 to its outer radial position I". On theouter end (Fig. 7) of the actuating member 91, a roller I32 is rotatably mounted on a'pin I33 and is adapted to engage the inner surfaces I25 of the members 96. The member 91 (Fig. 4) is apertured at I34 and is rotatably Shoulders I24 formed on the 7 mounted on the outer bearing surface I35 of the bearing member 31 and is retained axially on the bearing I35 against the disc I23 by the lever 43. In response to the rotating movement of the dial 20, the camming member 91 is moved about the axis of the device through the action of the lever 43, a part of which is offset longitudinally into the plane of the member 91 to provide an edge or surface I36 for engaging the edge of the member 91 when imparting rotation thereto (Figs. 2, 4, 8 and 18). The member 91 is counterbalanced by an extension I3'I of the member and remains in whatever position it is moved to by the lever 43.

As the camming member 91 is rotated about the axis of the device, in response to the movement of the dial 20, the roller I32 carried thereby will engage the inner arcuate surfaces I25 of the members 96 and move successive members 96 outwardly to their radial outward positions II-'I,' where each member 96 successively is in the path of and is effective to stop the abutment 95. After the'following arcuate member 96 has been moved outwardly (Fig. 8), the roller I32 as it advances with the member 91, will disengage itself from the preceding stop member 96 and allow that member to be moved radially.

inwardly by the spring action of the flexible arm I05 to its intermediate position II8, where the inner arcuate surface I25 thereof adjacent the edge III will engage and be stopped by the shoulder I24 of the arm I22. As the member 96, which has been engaging the abutment member 95, moves inwardly, it'disengages itself from the end I02 of the abutment member 95 and the abutment member 95 and the pulsing mechanism 23 are then free to rotate in a clockwise direction, as viewed from the front, under the action of the torsion spring22 until the member 95 engages another stop member 96 that has been moved into its path. The individual members 96 are thus successively moved into operative position in the path of the abutment member 95 and moved from the operative position out of the path of the abutment 95 as the dial 20 and the camming member 91 are rotated. The outwardly displaced one of the stop members 96 which is operative to engage the abutment 95 is thus effectively advanced clockwise around the device in steps of 30 in response to the rotation of the dial 29 to stop the pulsing mechanism 23, upon completion of the pulsing operation, in a predetermined relation to the dial and there-- by limit the rotation of the pulsing wheel to arcuate movements corresponding to those of the dial- The dial, as previously stated, is provided with twelve equally spaced fingerholes 28 arranged in angular relation to each other of 30 and corresponding in number and angular relationship to the stop members 96 and to the teeth M on the pulsing wheel 24. With this arrangement, it will be seen that if a finger is inserted in a finger hole of the dial 20 and moved from one number position to another to rotate the dial through an arc of 30, the dial actuated members 43 and9'I will-cause the operative stop member 96 engaging the abutment member 95 to be moved to its intermediateposition after the following stop member has been moved to its outer position and thus permit a rotary movement of the spring stressed abutment member 95 and the pulsing wheel 24 through a pulse-increment of 30 to actuatethe pulsing contacts 26 and 21 once, thereby producing one pulse. Thus,'for

each pulse-increment of rotation of 30 of the dial, the stop members 96 are conditioned to allow a corresponding pulse-increment of rotation of 30 of the pulsing wheel and the production of one pulse.

The torsion spring 22, as previously described,

is initially adjusted to produce a predetermined torque between its ends to stress the pulsing mechanism 23 for rotation in a clockwise direction and stress the dial 20 for rotation in a counterclockwise direction, as viewed in Fig. 1. The rotary movement of the pulsing mechanism 23 is arrested by the engagement of the abutment member 95 with one of the arcuate stop members 96, as previously described, and to prevent substantial reverse movement of the dial 20 at the end of each digit dialing movement, the lever 43, which is secured to and rotates with the dial 20, is provided with an abutment or stop lug I40 (Figs. 1, 2, 4, '7, 8, 9 and 18) adapted to engage and bestopped by the preceding stop member 96, which has been moved from its outer position to its intermediate position behind and in the path of reverse movement of the stop lug I40 (Figs. 9 and 18). As the lever 43 is rotated forwardly, the members 96 are cammed radially outwardly from their intermediate positions H8 in front of the lug I40 of the lever 43 by the roller I32 and then returned to their intermediate positions II 8 in back of the lug I40 after the lug has passed thereunder.

The short reverse movement of the dial 20 and the lever 43 at the end of each digit dialing movement is utilized to condition the arcuate members 96 for actuating circuit control means which operates to connect the pulsing spring contacts 26 and 2! to the telephone line and disconnect the receiver and the transmitter from the line during the transmission of the pulses and to disconnect the pulsing contacts 26 and 21 from the line and reconnect the receiver and the transmitter to the line on completion of the transmission of the pulses, as will be described hereinafter.

The lug I40 of the lever 43 (Figs. 14 and 18) is provided with an inclined surface I4I, which, during the reverse movement of the member 43, is adapted to engage the inclined edge II2 of the stop member 96 in its path and cam the member 96 rearwardly off the shoulder I24 of the arm I22. When cammed off the shoulder I24, the member 96 is moved to its radial inner position H9 by the spring arm I05 and it also serves to stop the reverse movement of the lever 43 and the dial 20.

Upon clockwise rotation of the dial 20by the calling party, the lever 43 moves into engagement with and moves the camming member 9! until the dial 2%! has reached the end of its selected are of dialing movement, at which time the roller I32 of the member 91 will come to rest engaging an arcuate member 96 on its inner arcuate surface 135 (Fig. 9) intermediate its ends after having moved that member 96 to its outer position III while the preceding member 96 has moved from its outer to its intermediate position II 8 behind the lug I40 on the lever 43 (Figs. 7, 8, 14, and 18). Upon release of the dial 20 by the calling party at the end of each digit dialing movement, the torsion spring 22 moves the dial 20 and the lever 43 reversely or counterclockwise until the portion I40 of the lever 43 engages the stop member 96' in its path, which member 96 limits the reverse travel of the lever 43 to a very short movement and is. itself. caused to be moved to its inner position II9 thereby. The camming member 91 remains stationary while the lever 43 is moved reversely so that the edge I36 of the lever 43 is separated from the member 9'! at the end of the dialing operation (Figs. land '7) The roller I32 on the camming member 91, as it rotates and engages successive members 96 and moves them sequentially to their outer positions II I and then releases them so that they may move to their intermediate positions, serves, on the following rotation of the member 97, to reset to their intermediate positions II8 the members 96 that have been moved to their inner positions H9. The members 96 are thus set up in their inner positions I I9 for one revolution of the camming member 9! and the pulsing mechanism 23, after which they are restored to their intermediate position I l 8 by the rotatable camming member 91 as described.

When the members 96 are in their radial inner positions I49; the cams II3 thereon are in the path of a rotatable lever I46 of a circuit-controlling mechanism, which lever rides up on and off the cams I13 to effect, respectively, the alternate disconnecting from and connecting to the telephone circuit of the pulsing contacts 26 and 21 and simultaneously therewith the alternate connecting to and disconnecting from the line of the transmitter and the receiver. The circuit controlling means, in cooperation with the opera tive cams I I3, serves to connect the pulsing contacts 26 and 21 to the line circuit and to disconnect the transmitter and receiver from the line during the transmission of each digit series of pulses and to disconnect the pulsing contacts 26 and 21 from the line and to reconnect the receiver and transmitter to the line on completion of the transmission of each digit series of pulses. The circuit controlling means comprises the switch 69 (Figs. 4 and 13), a switch operating rod I45, and the switch operating lever I46, which lever is mounted for rotation with the pulsing device 23.

The switch operating lever I46 extends diametrically across the device and has a T-shaped end I41, which is secured in spaced relation, as by spacers and rivets, to a similar T-shaped end I48 formed as a part of the abutment member (Figs. 4, 7, 11 and 19). Adjacent its T-shaped end, the lever I46 is reduced in thickness to permit it to be flexed near its fixed end and permit the free end thereof to be reciprocated. The free end of the lever I46 is slotted to receive a roller I50, which has a conical portion I5! and which is rotatably mounted on a pin I52 fixed to the lever. The intermediate portion of the lever I46 is enlarged to form an annular yoke I53 encircling the shaft 48 and is provided with a finger-like portion I54 projecting into an aperture I55 in the shaft 48 The switch operating lever I46, in its normal or unfiexed position, occupies a forward position, indicated in dotted lines in Fig. 4. This occurs when the members 96, which are radially aligned with the lever I46, are in their intermediate or outer positions H! and H9, in which positions there is no engagement of the members 96 with the roller I50 of the arm I46. In their inner or circuit controlling positions N9, the cams II3 on the members 06' engage the roller i 59 on the lever I46 and move its free end rearwardly to the full line position as indicated in Fig. 4. This rearward movement of the lever I46 by a member 96 may be eliected by a rotary movement of the lever I46 relative to a member 96 when the member 96 is in its inner position H9, in which case the roller I50 rides over the cam H3, or it may be effected when the lever I46 comes to rest with the roller I50 radially aligned with one of the members 96 in its intermediate position H8 and the member 96 is subsequently moved to its inner position II9 by the lever 43, as previously described, in which case themember 96, in moving radially inwardly, engages the conical portion of the roller I50 and cams the free end of the lever I46 rearwardly. v

One end of the switch operating rod I45 (Figs. 4 and 13), which is mounted for reciprocation within a central bore of the shaft 48, engages the finger-like portion I54 of the switch operating lever I46. The opposite end of the rod I45 is enlarged and engages a flat insulating member I58 secured to the intermediate portions of a pair of contact springs I60 and I6I- of the switch 69. The contact springs I60 and IN, electrically connected in the telephone circuit (Fig. 16), are reciprocable through the movement of the rod I45 and are flexed to normally urge the rod I45 toward the left, as viewed in Fig. 4. When moved rearwardly, the contact springs I60 and I6I engage, respectively, contact springs I62 and I63 and close portions of the circuit to the transmitter and receiver (Fig. 16) The contact springs I60 and I 6|, when moved forwardly, open the telephone circuit through the contacts I62-I63 to disconnect the transmitter and the receiver therefrom, and the contact spring I6I, in its forward position, engages a contact spring I64 to conmeet the pulsing springs 26 and 21 into the oil:- cuit.

Thus the reciprocation of the switch operating lever I46, in response to the action of the cams I I3, is transmitted through the rod I45 to actuate the contact springs I60-I 6| of the circuit control switch 69. At the end of a dialing operation and during thenormal condition of the calling device, the pulsing springs 26 and 21 are disconnected from the line at the contacts I6I-I64 and the receiver and transmitter are connected in the line circuit by the engagement of the contacts I60-I62 and I6I-I63, respectively. This is the condition obtaining when a cam II3 has effected the movement of the switch 69 to the position shown in the drawings (Figs. 4, 13 and 16). When the roller I50 of the switch operating lever I46 rides off the cam I I3 and permits the spring contacts I60 and I6I to move forward after the, production of the first pulse of each seriesiof pulses, the pulsing contacts 26-21 are connected into the line by the contact springs I6I--I64'and the transmitter and receiver, respectively, are disconnected from line at and I63 (Fig. 16).

In dialing each digit of a called number, the dial 26 and the pulsing mechanism '23 are moved through arcs sufiicient in length to actuate the pulsing contacts 26 and 21a number of times equal to the digit dialed plus one. In other words, the vdial and the pulsing mechanism are rotated to produce one pulse in excess of the number crane-digit dialed. For example, when the digit 3 is dialed, the dial 29 and the pulsing mechanism 23 are rotated-through an arc sufllclent to produce four pulses. The pulsing spring contacts 26 and 21 are connected to the telephone circuit only during the period of transmission of the number of pulses equal to the number of the digit dialed; three in this case, and are disconnected from the circuit durin the period of. the one extra pulse. This provides an interval oftime between eachseries'of pulses and insuresthe necessary timedelay for the operation of the automatic switching mechanism-fin the central office when succesive series of p are'transmitted in rapid succession. Pref, H ly ing contacts 26 and 21 are disconnected: from the telephone circuit during the production of the first pulse of each series of 'pulses for each digit dialed and this is accomplished by the actuation of the circuit controlling switch 69 in response to the rearward movement of the switch operating lever I46 by the various actuating cams I I3 which have been set to their inner positions *9. .The stop and cam members 96-I I3 are set in predetermined positions in response to the actuation of the dial 20, as previously described, to cause the lever I46, at theend of each dialing operation, to stop in a positionwhere the roller I50 will rest on one of the cams I I3 in substantially the position indicated inFigs. 4, 7 and 15. Thus at the end of a complete dialing operation, the lever I46 will have been moved to its rearward position, as shown in full lines in Fig. 4, by one of the cams I I3, and will have actuated the switch 69 to close the contact, springs I6I, I63 and I60, I62 in series, respectively, with the receiver and the transmitter, whereby the telephone circuit is in normal operating condition, as indicated in the diagram of Fig. 16.

The operation of the calling device will now be described. 'I o dial the numeral or digit 5, for example, .the personcalling inserts his finger into.

the finger hole 28, opposite the numeral 5, and rotates the dial in a clockwise direction until his fingerengages stop 45, after which he withdraws hisfinger and the dial 20 is reversely rotated a short distance by the, spring 22. The arcuate distance rotated by the dial in the dialing of the digit 5" is equal to six pulse-increments ofmovement or six times the angular distance between adjacent finger holes 28 in the the contactsprings I62 dial 20plus the relativelyshort extra movement which is equal to the reverse movement of the dial at the end of the digit dialing movement. Assuming the parts to-be in the position shown inFig. 1 at the start ofthe dialing operation, as the dial 20 begins its clockwise rotation, thelever 43,.rotating with the dial, engages the camming member 9'I and imparts rotation thereto in unisonwith themovement of the dial 20. The roller I32 on the camming member 9'l, which, at the beginning of the dialing movementfas shown in Fig. I, is holding the stop member 96 opposite the digit numeral I in outer position H1 in engag'ement with the abutment member 95, is rotated with thed'ial 20 through six 30 pulsing increments and engages and cams six successive stop members. 96 each to its radial outer position I I1 until the r'oller I32 has "come torest, holding thestop' mmber 96 opposite the digit humeral '7 in its outer position] I1 "As the roller I32 rides out from under 'thestop' member 96 aligned with thejnumeral i1, that"'stop member 96 will be moved to its intermediate poSitiQiI'IIQYb'y the biased flexible arm I05 and disengage itself from the end I102 of the abutment member which,

being stressedfor rotation by the torsion spring 22,starts't,o move in a clockwise direction, as viewed in Fig 1, and continues'untll it engages a stop 96 moved into its' path by the roller I32.

enoughythe successive stop members 96 will be moved outwardly to their outer position I" and then inwardly to their intermediate position II6 ra idly enough to prevent the stoppin O t the puls-- governor-controlled rotary movement of the abutment member 95 until after the dial has completed its full digit dialing movement and the abutment member 95 engages the stop 96, which is aligned with the digit numeral 7" and has been moved to and held in its outer position H1 in the path of the abutment 95 by the roller I32. Thus it will be seen that in dialing the digit 5, the dial 20 is rotated through six pulse increments of 30 each to advance the operative stop 96 through six pulse-increments and permit the rotation of the spring driven abutment 95 and the pulsing mechanism associated therewith through a similar arc of movement of six pulse-increments, resulting in the production of six pulses.

When the person calling removes his finger from the finger hole 28 in the dial at the end of a digit dialing operation, the dial 20 and the lever 43 carried thereby are reversely rotated by the torsion spring 22, which reverse movement of the lever 43 and the dial 20 is arrested by the engagement of the lug I40 on the lever 43 with the adjacent stop member 96 disposed in its path of reverse movement. It will be understood that during dialing, the lug I40 on the lever 43 passes underneath the stop members 96 as the stop members are moved outwardly by the roller I32 of the camming member 91 as the member 91 is rotated by the lever 43 and that, as the stop members 96 are moved radially inwardly to their intermediate positions II8, they are positioned successively behind the lug I40. Therefore, when the lever 43 is moved in a reverse direction, the lug I40 will engage the stop member 96 in its path and the cam surface I4I on the lug I40 will engage the inclined surface I I2 of the stop mem; ber 96 and cam the stop member rearwardly or the shoulder I24 of the arm I22 to aposition Where it isfree to be moved to its'ratlial inner position II9. Thus the stopmember 96 immediately in back of the lug I40 of the lever 43 at the end of its digit dialing movement serves to limit the reverse movement of the lever 43 and the dial 20 and, by the camming action of the cam face I M during its reverse movement, this stop member 96 is moved axially off the shoul dr I24, after which it is moved radially to its inner position I I9, in which position is is adapted to engage the roller I50 and effect the movement of the lever I46 to actuate the circuit control switch 69. t I I The rotatable portion of the pulsing mechanism 23 and the abutment member 95 carried thereby, being stressed for rotation in a clockwise direction by the torsion spring 22, will start to rotate when the stop member 96 engaging the abutment member 95 is disengaged therefrom and, as previously mentioned, will continue to camming member 9 1 and. the roller rotate in a clockwise direction until the abiitv V ment member 95 is engaged and stopped by another stop member 96 moved into its path. 'At the beginning of the dialing operation, the roller I50 on the switch actuating lever I46, as shown in Figs. 1 and 4, is in engagement with the high point of a cam II3 on a stop member 96 moved to its inner position H9 and the cam II3 mam tains the switch operating lever I46 in its rearward position and maintains the control switch trolled by the governor 10, the teeth H on the pulsing wheel 24, at regular intervals, will actuate the pulsing contact springs 26 and 21 to produce a series of pulses. The roller I50 riding on the cam I I3 of the inwardly positioned stop member 96 serves to maintain the actuating lever I46 and the control switch 69 in the position with the spring contacts I66I62 and I6I-I63 closed and the spring contacts "SI-I64 open, as indicated on the drawings, until the first of the series of pulses has been produced, after which the roller I50 rides off the cam H3 and permits the actuating lever I46 to flex to its forward position and effect the actuation of the control switch 69 in the opposite direction to open the spring contacts l60-I62 and I6I-I63 and close the spring contacts I6I-I64. This actuation of the switch 69 in the reverse direction serves to disconnect the receiver and the transmitter from the line and connect the pulsing contacts 26 and 21 to the line while the remainder of the pulses of the series are produced by the pulsing mechanism. Thus, of the six pulses produced by this dialing operation, the first is not transmitted because the pulsing contacts 26 and 21 are disconnected from the line during its production, whereas the remaining five pulses are transmitted because, during their production, the pulsing contacts 26 and 21 are connected to the line. The roller I50 on the lever I46 near the end of its arc of movement and after the series of pulses has been transmitted, will engage the cam II3 of a stop member 96 moved to its inner position H9 at digit numeral 8 and will be cammed rear- Wardly to actuate the control switch 69 to disconnect the pulsing contacts 26 and 21 from the line and reconnect the transmitter and the receiver to the line before the roller comes to rest on the cam surface I I3.

The remaining digits of the called number are dialed in a manner similar to the first just described. For example, if the second digit of the called number is 2, the person calling will insert his finger in the finger hole 28 of the dial 20 opposite the digit numeral 2 and rotate the dial clockwise until his finger engages the stop 45. The dial 20 is thus moved through three pulseincrements of 30 each plus a little extra and the I32 are moved through three pulse-increments, which movement of the roller I32 permits the disengagement of the operative stop 96' from the abutment member 95 and effectively advances the operative stop member three pulse-increments, thereby permitting the'abutment member 95 and the pulsing mechanism to rotate three pulse-increments and effect the production of three pulses. The circuit control'switch 69, which at the beginning of the digit dialing movement is positioned so that the transmitter and the receiver are connected to the telephone circuit and the pulsing contacts 26 and 21 are disconnected from the circuit, is maintained in this position by the roller I50 of the lever I46 riding on the cam H3 while the 69 actuated in one direction to close, the contact springs I60I62, and I6II63 and to open the contacts I6I-I64. With the control switch 69 in this position, the receiver and the transmitter are connected to the circuit and the pulsing contacts 26 and 21 are disconnected from the circuit.

As the pulsing mechanism rotates at a speed confirst pulse of the digit series is produced, after which the roller I50 rides ofi the cam II3 to permit the lever I46 and the control switch 09 to be actuated in the forward direction to connect the pulsing contacts 26 and 21 to the circuit and disconnect the transmitter and receiver from the circuit during the transmission of the two remaining pulses of the series. When the person calling removes his finger from the finger hole at the end of the digit dialing movement, the dial 2 0 and the lever 43 movable therewith 13 are moved a short distance in a reverse direction. The lug MB of the lever 43 engages the stop member 96 in its pathof reverse movement and eifects the movement of the stop 96 from its intermediate position to its inner position 9, in which position the cam 3 on the member 96 will engage and move the roller I50 and the lever I46 which, in turn, will actuate the circuit control switch 69 in a forward direction to disconnect the pulsing contacts 26 and 21 from the telephone circuit and to reconnect the transmitter and the receiver to the circuit.

When the dial is rotated rapidly to diala digit of 2, called number, the operative stop member 96 engaging the abutment 95 is withdrawn therefrom and is effectively rotated a distance equal to the angular movement of the dial 26 and with substantially the same rate of movement as that of the dial and the relatively movable governor-controlled pulsing mechanism 23 is caused to rotate in a clockwise direction. Before the abutment member 95 of the pulsing mechanism 23 advances to and engages the operative stop member 96 in its path, a second digit may be rapidly dialed, which effectively advances the operative stop an angular distance equal to the angular second-digit-dialing movement of the dial 29 and serves to keep the operative stop member 96 in advance of the abutment member 95. The remaining digits of the calling number may be dialed rapidly in a similar manner while the abutment member 95 and the pulsing mechanism 23 are rotating at the governorcontrolled speed and this will result in the dialing operation being completed before the completion of the rotation of the pulsing mechanism 23.

When the dialing of the number is rapidly completed, the rotation of the pulsing mechanism starts at the beginning of the dialing operation and continues to its completion at an even rate of movement controlled by the. governor. The pulses are thus continuously produced at regular intervals from the beginning'to the completion of the pulsing operation, from the first digit series to the last digit series of pulses of the number being dialed,-and the pulsing contacts 26 and 21 are connected to the telephone circuit by the circuit controlling means on completion of the first pulse of each digit-series of pulses and disconnected therefrom on completion of the last pulse of each digit-series of pulses. The pulsing contacts 26; '21 are thus disconnected from the line circuit at the beginning of and at the end of each number dialing operation and they are disconnected for an interval of one pulse, the firstpulse, in each digit-series of pulses of the number called.

ith the improved dialing apparatus herein disclosed, a party calling a number may rotate the finger wheel with great rapidity to dial succeeding digits of the called number and have the finger wheel set up or condition means in the device to transmit at an even and controlled rate the successive series of digit-pulses of the called number and in spaced relation one series of pulses to another.

What is claimed is: r

.1. In a telephone calling device, pulsing contacts, means rotatable in one direction only for actuating said pulsing contacts to produce a pulse for each predetermined arc of movement thereof, spring means for stressing said actuating means for rotation in said one direction, a governor for controlling thespeed of said actuating 14 means, non-rotatable stop means to stop said actuating means in any one of a plurality of predetermined positions, and dialing means for actuating said non-rotatable stop means to start said actuating means in response to the rotation of the dialing means and to stop saidactuating means in a predetermined relation to said dialing,

means whereby the rotatable actuating means is rotated through a predetermined arc to produce a predetermined number of pulses as determined by the rotary movement of the dialing means,

2. In a telephonecalling device, pulsing means including a wheel rotatable in one direction only and capable of producing a predetermined number of regularly spaced pulses for each revolution thereof, a plurality of non-rotatable normally inoperative stop members capable of stopping said wheel in a plurality of positions whereby said wheel may be stopped after the production of various predetermined numbers of pulses, a dial coaxially aligned with said wheel and rotatable in said one direction through dialing movements of various predetermined lengths and movable in a reverse direction through a relatively short distance at the end of each dialing movement, spring means urging said dial and said wheel for rotation in opposite directions, a governor connected to said wheel for controlling the speed thereof, means rotatable with said dial for rendering successive ones of said stop members operative to stop said rotatable wheel after a predetermined movement thereof asdetermined by the movement of said dial, and means rotatable with said dial and engageable with said stop members for limiting the reverse movement of said dial.

3. In a telephone calling device, the combination of pulsing means including a wheel rotatabl in one direction only and capable of producing a predetermined number of pulses at regular intervals for each revolution thereof, a plurality of movable normally ineffective stop members adapted to stop said wheel in a plurality of positions whereby said wheel may be stopped after various predetermined movements and the production' of various predetermined numbers of pulses, spring means for rotating said wheel in said one direction, a governor associated with said wheel for controlling the speed thereof, a dial selectively operable in said one directiononly through various arcs of predetermined lengths, and means rotatable with said dial for actuating successive stop members to render one of said stop members effective to stop said wheel after a predetermined movement thereof as determined by the movement of said dial.

4. In a telephone calling device, the combination of a dial rotatable in one direction through dialing movements of various lengths, pulsing contacts, means including a rotatable member for actuating said contacts}spring eans interconnecting saiddial and said rotatable member for stressing said member and. said dial for rotation in opposite directions, a governor connected with said rotatable member, a plurality of stop members movable to a plurality of adjusted positions, said stop members acting inone of their positions to limit the reverse movement of said dial, and dial actuated means operable in response to each dialing movement of said dial to render a selected one of said stop members effective to stop the pulsing wheel in a predetermined position relative to said .dial. a r

5. A telephone calling device comprising a dial rotatable in one direction through dialing move ments of various predetermined lengths and I is movable in a reverse direction through a relatively short distance at the end of each dialing movement, pulsing contacts, a pulsing wheel rotatable in one direction for actuating said pulsing contacts to produce a predetermined number of pulses at regular intervals -'for each revolution thereof, means for supporting said dial and said wheel for rotation about a common axis, spring means for stressing said pulsing wheel and said dial for rotation in opposite directions, a governor connected to said wheel, a stop element rotatable with said Wheel, a plurality of movable non-rotatable stop members adapted to engage said element and stop said wheel in a plurality of positions, means rotatable with the dial for moving successive stop members from a first to a second position to render one of said members operative to engage said stop element and stop said pulsing wheel after a predetermined rotation thereof determined by the dialing movement of the dial, said means including an arm engageable with the stop members in said iirst position to limit the reverse movement of said dial, and means for returning said stop members from said second position to said first position.

6. In a telephone calling device, pulsing contacts, a pulsing wheel for actuating said contacts, a governor for controlling the speed of said wheel, a dial operatively associated with the pulsing wheel to effect the rotation thereof, a plurality of movable members each settable in a plurality of positions, dial actuated means for selectively setting said movable members, and means rotatable in timed relation with the pulsing wheel and operable under control of said members in one of said set positions for rendering the pulsing contacts ineffective.

"7. In a telephone calling device, the combination of a dial rotatable in one direction through dialing movements of various lengths and movable in a reverse direction through a relatively short distance at the end of each dialing movement, pulsing means including a pulsing member operatively connected to said dial and rotatable through arcuate movements determined by the dialing movements of said dial for producing a series of pulses for each of said arcuate movementaa plurality of inoperative cam members, dial actuated means operable in response to the reverse movementsof said dial .to render selected ones of said cam members operative, and means rotatable in timed relation to said pulsing member and under control of said operative cam members for rendering said pulsing means ineffective for one pulse in each series of pulses produced.

8. In a telephone calling device, a dial rotatable in one direction through dialing movements of various lengths and movable a relatively short distance in a reverse direction at the end of each dialing movement, pulsing contacts connectible to a calling circuit, means for actuating said pulsing contacts including a member operatively connected to said dial and rotatable through rotary movements determined by the dialing movements of said dial for producing a series of pulses for each of said rotary movements, a plurality of normally inoperative cam members, dial actuated means operable in response to the reverse movements of said dial to render selected ones of said cam members operative, and switch means including an element rotatable in timed relation to said rotatable pulsing member and detestable by said operative cam members to consect the pulsing contacts to sa'id'calling circuit for all or the pulses except one in each series 16 ofpiilses and for disconnecting the pulsing com tacts from the calling circuit for said one pulse in each of said series of pulses.

9, A telephone calling device comprising a dial rotatable in one direction through dialing movements of various lengths and reversely movable through a relatively short distance at the end of each dialing movement, means for limiting the reverse movements of said'dial, pulsing contacts, a rotatable pulsing wheel yieldably connected to said dial for rotation in said one direction in response "to dialing movements of said dial to actuate said pulsing contact, a governor for controlling the speed er said pulsing wheel,

- dial actuated means operable in response to dialing movements or said dial for limiting the lengths of the rotary movements of said rotatable pulsing wheel tosub'stan-tialiy the lengths of the dialing movements of said dial, and means including means conditioned in response to the reverse mevementsor said dial to render the pulsing contacts ineffective during a portion of each move ment of the pulsing wheel imparted thereto by and corresponding to the dialing movements of said dial. 7

:10; A telephone calling device comprising a dial rotatable in one direction through dialing movements or various predetermined lengths and movable in a reverse direction through a relatively short distance at the end of each dialing move ment, means for limitingtne reverse movements or said dial, pulsing means including a member coaxiall'y aligned with said dial and rotatable only in said one direction capable of producing a pulse for each predetermined are of movement thereof, spring means for stressing said member and said dial for rotation in opposite directions, a governor associated with said rotatable member to control the speed thereof, dial actuated means operable in response to the dialing movements of said dial to effect the starting of the rotatable memher and to stop said member in a predetermined position with respect to said dial whereby the rotatable member may be moved through various predetermined arcsto produce various predetermined series of pulses as determined by the dialing movement of said dial, and means including normally inoperative actuating means selectively rendered operable in response to the reverse movement of said dial to render ineffective one of the pulses in each series of the pulses produced.

11. A telephone calling device comprising a dial rotatable in one direction through dialing movements of various predetermined lengths and movable a relatively short distance in a reverse direction at the endof each dialing movement, pulsing contacts electrically co'nnectible to a telephone circuit, rotatable means for actuating said pulsing contacts, spring means for stressing the rotatable means and the dial for rotation in opposite directions, a governor connected to said rotatable means to control the speed thereof, a plurality of stop members settable in a plurality of positions and operable in one of said positions to limit the reverse movement of said dial, dial controlled means operable in response to the dialing movements of the dial to move selected ones of said stop members in a second position and operable in response to the reverse movements of the dial to set selected ones of said stops in a third position, said stop members in said second position serving tostop the rotatable ulsing means in a predetermined position "with respect to the dial, switch means connecting the pulsing contacts to 'the'tel'ephone circuit. and

means rotatably associated .with said rotatable means and operable .under control of said stop members set in said third position to actuate said switchmeans to disconnect the pulsing contacts from the calling circuit for an interval of one pulse. 4 l

' 12.,A telephone calling device comprising a dial rotatable in one direction through dialing movements of various lengths and movable a relatively short distance in a reverse direction at the end of each dialing movement, pulsing contacts, a rotatable pulsingwheel foractuating said pulsing contacts, spring meansfor stressing the pulsing wheel and the dial for'rotation in opposite directions,. a governor associated with said pulsing wheel to controlzthel speed thereof, a plurality of stop members .settable in a plurality of positions, dial controlled means operable in response .to, the dialing movements" of said dial for moving selected ones of said stops in one position and operable in response to the reverse movements of said dial to said,set selected ones of.said stops in another position, said stop members cooperating with said dial controlled means to limit the reversemovement of said dial, said stops set in said one positionserving to stop said pulsing wheel in a predetermined relation to said dial, and meansrotatablexin timed relation with the pulsing wheeland operable under control of the stop members insaid other position for rendering the pulsing contacts inefiective for an interval of one pulse. *1

131A telephone, callingv devices comprising a dial rotatable in one direction through dialing movements of various predetermined lengths and movable a relatively short distance in a reverse direction at the end of each' dialing movement, a plurality of adjustable stop -members, means actuated by said dial in response'to each dialing movement for moving a selected one of saidstop members in oneposition and in response to each reverse movement forsetting a selected one of said stop members in another position, pulsing means including a rotatable member operatively connected to the 'dial and rotatable in said one direction to produce a predetermined number of pulses at regular intervals forteaoh revolution of the member, said stops in said one position operating to stop the rotatable member in a predetermined relation to said dial whereby'said rotatable member may be rotated through various predetermined arcs to produce various predetermined series of pulses as determined by the dialing movements of said dial, and means rotatable in timed relation with said rotatable member and. under control of the stops in said other position to render said pulsing means ineffective during the: production of on'epulse of each of said series of pulses produced. 7 1

14. A callingsdevice for use with a telephone in an automatic telephone system comprising a dial rotatable in one direction through dialing movements of various lengths and movable a relatively short distance in a reverse direction at the end of each dialing movement, means for limiting the reverse movement'of said dial, pulsing contacts, rotatable pulsing means for actuating said pulsing contacts, spring means for stressing the pulsing means and the dial for rotation in opposite directions, "a "governor associated with said pulsing rne'ansto control the speed thereof, dial controlled means operable in response to each dialing movement'for starting thev rotationof said -pulsing means ;and for; stopping said roiat bl pu s means in va;pr r ned-re tion to said dial, apluralityofinormally inefiective cam members, dial controlled. means operable in response to the reverse movements of said dial torender selected ones of said cams efiective,rswitch means operable, inuone position to efiectively connect said pulsing contacts to and disconnectthe telephone from the telephone system and in a secondpositionto disconnect said pulsing contacts from andreconnect the telephone to the telephonesystem, and means including an element rotatableintimed relation with saidrotatable pulsing meansoperable under control ofsaidefiective cam members'to actuate id sw t h means. l

15. A- telephone calling device comprising pulsing means including a' wheel rotatable in one di rection only for producinga pulse for each pulseincrement of rotation-pi predeterminedlength ics cd Wh at a al select e r ta bl in s I response to the reverse one direction only through dialing movements of various, predetermined,lengths and operatively connected o. sa Wh e -t0 efisct he r t o o said wheel throughvarious series of pulse-increments for producing various series of pulses,

means for moving sa1d dial in a reverse direction at the end of each dialing movement, means for limiting the reverse movement of said dial to a relatively short distance, and means operablein movement ,of said dial to render ineffective apulse ofeach seriesof pulses produced, H

16. A telephone calling'device' comprising puls ing contacts, means including a wheel rotatable in one direction only for actuating said pulsing contacts to produce a pulse for each pulse-increment'of rotation of a predetermined length of said wheel, spring means for rotating said wheel in said one direction, stop means capable of stopping said wheel, after each pulse-increment of rotation, dialing -means selectively rotatable in said one direction only through dialing movements of various predetermined lengths iorselectively actuating said stop means to effect the rotation of said wheel through various 5 series of pulse-increments for producing various series ofpulses, means for moving said dialing means ina reverse direction at the end of each dialing movement, meansfor limiting the reverse movement of said dialing means to a relatively short distance, and means operable in response to the reversefmovement of said dialing means for rendering ineffective-one pulse of each series of pulses produced,

I 1'7. A telephonecalling "device comprising a dial rotatable in one'direction through dialing moveiflotata-blein one direction for actuating said pulsing contacts a predetermined number of times at regular intervals for each revolution thereof, 'means-for supporting said dial and said wheel for rotation about a common axis, spring means for stressing said pulsing wheel and. said dial for rotation in opposite directions, a governor for said wheel; a stop element rotatable with said wheel, a plurality of movable stop members operable to engage the said stop element in a plu- 'rality of positions and capable of stopping said wheel after the production of each pulse, means rotatable with the dial tor moving successive stop members from a first to a second position to ren- "der one of said stop members'operative to engage lsaid stopelement and saidpulsing wheel in a asvaoz'ss predeterminedrelation to said dial, means for returning said step members from said second position to said first"position,-means rotatable with said dial and engageable with said stop members for limiting-the reverse movement of said dial and for selectively moving said stop members to a third position,- and means including a member rotatable in timed relation to said pulsing wheel and actuatable bysaid stop members in said third position to' render said pulsing contacts ineffective.

18. In a calling device, the combination of a dial rotatable in one direction only through dialing movements of various lengths, pulsing contacts, means including amember rotatable in one direction only for producing a plurality of regularly spaced' pulses i'oreachrevolution' of said member, spring means for stressing said memberfor rotation in said one direction, a governor operatively connected to said rotatable member, stopmeansforstc'pping saidmember in a predetermined relation to said dial, and means for effectively advancingsaid stop means in response to the dialing movements-of said dial to initiate rotation; of said member and to limit the rotation of said member to "arcs corresponding to the dialing movements 'ofsaid dial.

19'. In a telephone calling device, the combination of a dial rotatable'inone direction only and freely movable in said one direction through dials. m e s. o va ious. le ths. pulsi g me s including a governor controlled member rotatable in one direction. only for producing a plurality ofregularly spaced l l' les. for each revolution of saidrotatable'memb'er, means interconnecting said dial and. saidpulsing means for'rotating said member through. arcs corresponding to the dialing. movement cijsaid dial in re ponse to and, simultaneously with said dialing movements, and dial-controlled means for rendering said pulsing meansinefiectiye'during a portion of each arc of rotation imparted tosaid rotatable member by said dial, f I

20. In a calling device, theccmbination of pulsing contacts, means including a member rotatable in one direction only for producing a pulse for eachv predetermined arcof rotation thereof, a governor operativelyconnected. tov said rotat able member for controlling the speed thereof, a dial rotatable in one diction onlyand' ireely actuatable insai'd direction hrough dialing move.- ments of various lengths, means including a yieldable element, interconnecting said dial and said rotary member for; .tating said rotatable member through proportionalto the clialing movement of saiddial. in: responseto and simultaneously with said dialing movements, and V dial controlled means. for rendering said pulsing contacts ineffective during a portion of each arc of rotation imparted tcsaid rotatable member-' by saiddial. 21. In a telephone calling device, the combination of pulsing. contactsmeans including a member rotatable in: one direction; only for actuating said contacts to produce. a pulse; for eachpredetermined arc of rotation thereof, a, governor op.- eratively connected tosaidrotatable member for controlling the. speed thereof, a dial rotatable. in one direction one direction through dialing; moyementsvoi, various lengths, a. yieldable, drivemeans interconnecting said dial and-sa d rotatable, member for rotatingsaid rotatable member in response. to

and simultaneously." Withdialing. movements of o ly nd i y movable. in said ftacts; 'connectiblfe to. a calling circuit, governorcontrolled means including a member rotatable 20 said dial; and dial controlled means operable to initiate the rotation of said member and. to stop said rotatable member after arcuate movements thereof corresponding to the dialing movements of said dial.

22. In a telephone calling device, the combination of. pulsing contacts, means including a member rotatable in one direction only for actuating said contacts to produce a pulse. for each predetermined arc of rotation thereof, a governor operatively connected to said. rotatable member for controlling the: speed thereof, a dial rotatable in one direction only and freely movable in said one directionv through dialing movements of various lengths,;a yieldable drive means interconnecting said dial. and said rotatable member for rotating said rotatable member in response to and simultaneously with dialing movements of said dial, dial controlled means operable to initiate the rotation of said member and to stop said rotatable member after arcuate movements thereof corresponding to the dialing movements of said dial; and dial controlled means for rendering said pulsing contacts inefiective during a portion of each arc. of rotation imparted to said rotatable member by said dial.

23. In a telephone: calling device, the combination of a dial freely rotatable in one direction through dialing. movements of various lengths, pulsing. contacts. a toothed pulsing wheel for actuating said, contacts, means. rotatably supporting said dial and said pulsing wheel in axial alignment, a spring operatively connected to said dial for stressing. saidpulsing Wheel for rotation in said one direction, a. governor for controlling the rotation of said pulsing Wheel, a plurality of normally inefiect'ive stop members operable to stop said wheel after each pulse movement thereof, and dial. actuated means operable in response to each dialing movement of said dial to render a. selected one of; said. stop members effective to stop the pulsing wheel in a predetermined position relative to said dial.

24. In a telephone. calling device, a dial rotatable in one direction only through dialing movements. of variousv lengths, pulsing contacts, means including a wheel. rotatable. in one direction only to actuate said pulsing contacts for producing.- a plurality of regularly spaced pulses or each revolution of: said wheel, spring means stressing said. wheel for rotation in said one direction, a governor operatively connected to said wheel; stop means for stopping said wheel in a predetermined position. relative to said dial, means operable in response tothe movement of said dial for eliectively advancing said stop means to initiate the rotation of said Wheel and to stop saidwheel after an arcuate movement thereof corresponding to the dialing movement of said dial, a plurality of normally inoperative cam members, dial actuated means for selectively rendering one of said; cammembers operative for each dialing movement of said dial, and switch means including; means rotatable in timed relation to said wheel: and actuated by said operative cam members for rendering the pulsing contacts inoperative for a portion. of each arc of movement of said wheel imparted thereto in response to the dialing movements. of said diall 25. In. a telephone. calling device, pulsing conin one direction only-for actuating Said pulsing contacts 'toproduce a predetermined number of regularly spaced pulses for each rotation of said member, a dial rotatable in said one direction only and freely movable through dialing movements of various lengths, means interconnecting said dial and said rotary member for imparting arcuate movements to said member in response to and simultaneously with dialing movements of said dial and corresponding in length to said dialing movements, and means for connecting said pulsing contacts to the calling circuit for a portion of each arcuate movement of said rotatable member imparted thereto by said dial and for disconnecting said pulsing contacts from the calling circuit for a predetermined interval at one end of each arcuate movement of said rotatable member.

26. In a calling device for use with a telephone in a calling circuit, pulsing contacts connectible to said calling circuit, means including a member rotatable in one direction only for actuating said pulsing contacts to produce a predetermined number of regularly spaced pulses for each revolution of said member, spring means for stressing said member for rotation in said one direction, a governor operatively connected to said rotatable member, a dial rotatable in said one di- 25 rection only and freely movable through dialing movements of various lengths, means supporting said dial and said rotatable member for rotation about a common axis, stop means capable of 7 Number stopping said rotatable member after production 30 1,523,468

22 of each pulse, means operable in response to the movement of said dial for effectively advancing said stop means to initiate the rotation of said rotatable member and to stop said member in a predetermined relation to said dial, a plurality of normally inoperative cam members, dial actuated means for selectively rendering one of said cam members operative for each dialing movement of said dial, and switch means including means rotatable in timed relation to said rotatable member and in cooperation with said operative cam. members for connecting the pulsing contacts to said calling circuit and simultaneously disconnecting the telephone from the calling circuit for a portion of each arcuate movement of said rotatable member imparted thereto by said dial and for reconnecting said telephone to the calling circuit and for disconnecting said pulsing contacts from th calling circuit for a predetermined interval at one end of each arouate movement of said rotatable member.

' JOHN S. S'I'ULL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name 7 Date Woodrufi Jan. 20, 1925 

